Sidewinder is a control pad by Microsoft. It has nice solderable holes on the PCB and is USB ready, so it'll be a cinch to hack. The flat screen monitor can plug right in to a VGA card.
You won't have to fool around with JPACs or Arcade VGA cards this way. Just a little drilling, and wham, you have a killer bartop game.
Good luck, and let us know how it goes!
APf